Posted in Javascript onOctober 28, 2010
因为方便嘛,Jquery已封装JS的setTimeout 和 setInterval 方法,下面看下应用例子:
/** * jQuery.timers - Timer abstractions for jQuery * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com) * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/). * Date: 2009/10/16 * * @author Blair Mitchelmore * @version 1.2 * **/ jQuery.fn.extend({ everyTime: function(interval, label, fn, times) { return this.each(function() { jQuery.timer.add(this, interval, label, fn, times); }); }, oneTime: function(interval, label, fn) { return this.each(function() { jQuery.timer.add(this, interval, label, fn, 1); }); }, stopTime: function(label, fn) { return this.each(function() { jQuery.timer.remove(this, label, fn); }); } }); jQuery.extend({ timer: { global: [], guid: 1, dataKey: "jQuery.timer", regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/, powers: { // Yeah this is major overkill... 'ms': 1, 'cs': 10, 'ds': 100, 's': 1000, 'das': 10000, 'hs': 100000, 'ks': 1000000 }, timeParse: function(value) { if (value == undefined || value == null) return null; var result = this.regex.exec(jQuery.trim(value.toString())); if (result[2]) { var num = parseFloat(result[1]); var mult = this.powers[result[2]] || 1; return num * mult; } else { return value; } }, add: function(element, interval, label, fn, times) { var counter = 0; if (jQuery.isFunction(label)) { if (!times) times = fn; fn = label; label = interval; } interval = jQuery.timer.timeParse(interval); if (typeof interval != 'number' || isNaN(interval) || interval < 0) return; if (typeof times != 'number' || isNaN(times) || times < 0) times = 0; times = times || 0; var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {}); if (!timers[label]) timers[label] = {}; fn.timerID = fn.timerID || this.guid++; var handler = function() { if ((++counter > times && times !== 0) || fn.call(element, counter) === false) jQuery.timer.remove(element, label, fn); }; handler.timerID = fn.timerID; if (!timers[label][fn.timerID]) timers[label][fn.timerID] = window.setInterval(handler,interval); this.global.push( element ); }, remove: function(element, label, fn) { var timers = jQuery.data(element, this.dataKey), ret; if ( timers ) { if (!label) { for ( label in timers ) this.remove(element, label, fn); } else if ( timers[label] ) { if ( fn ) { if ( fn.timerID ) { window.clearInterval(timers[label][fn.timerID]); delete timers[label][fn.timerID]; } } else { for ( var fn in timers[label] ) { window.clearInterval(timers[label][fn]); delete timers[label][fn]; } } for ( ret in timers[label] ) break; if ( !ret ) { ret = null; delete timers[label]; } } for ( ret in timers ) break; if ( !ret ) jQuery.removeData(element, this.dataKey); } } } }); jQuery(window).bind("unload", function() { jQuery.each(jQuery.timer.global, function(index, item) { jQuery.timer.remove(item); }); });
JS Code
$("#close-button").click(function() { $(this).oneTime(1000, function() { $(this).parent(".main-window").hide(); }); }); $("#cancel-button").click(function() { $("#close-button").stopTime(); });
jQuery Timers插件地址:
http://plugins.jquery.com/project/timers
下面来自JavaEye论坛的JQuery Timers应用知识
提供了三个函式
1. everyTime(时间间隔, [计时器名称], 函式名称, [次数限制], [等待函式程序完成])
2. oneTime(时间间隔, [计时器名称], 呼叫的函式)
3. stopTime ([计时器名称], [函式名称])
/************************************************************* * everyTime(时间间隔, [计时器名称], 函式名称, [次数限制], [等待函式程序完成]) *************************************************************/ //每1秒执行函式test() function test(){ //do something... } $('body').everyTime('1s',test); //每1秒执行 $('body').everyTime('1s',function(){ //do something... }); //每1秒执行,并命名计时器名称为A $('body').everyTime('1s','A',function(){ //do something... }); //每20秒执行,最多5次,并命名计时器名称为B $('body').everyTime('2das','B',function(){ //do something... },5); //每20秒执行,无限次,并命名计时器名称为C //若时间间隔抵到,但函式程序仍未完成则需等待执行函式完成后再继续计时 $('body').everyTime('2das','C',function(){ //执行一个会超过20秒以上的程式 },0,true); /*********************************************************** * oneTime(时间间隔, [计时器名称], 呼叫的函式) ***********************************************************/ //倒数10秒后执行 $('body').oneTime('1das',function(){ //do something... }); //倒数100秒后执行,并命名计时器名称为D $('body').oneTime('1hs','D',function(){ //do something... }); /************************************************************ * stopTime ([计时器名称], [函式名称]) ************************************************************/ //停止所有的在$('body')上计时器 $('body').stopTime (); //停止$('body')上名称为A的计时器 $('body').stopTime ('A'); //停止$('body')上所有呼叫test()的计时器 $('body').stopTime (test);
自定义时间单位
打开源代码
找到
powers: { // Yeah this is major overkill... 'ms': 1, 'cs': 10, 'ds': 100, 's': 1000, 'das': 10000, 'hs': 100000, 'ks': 1000000 }
可以定制自己想要的了!
jQuery timers计时器简单应用说明
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